Questions
A body of M.I. of 3 kg-m2 rotating with an angular speed of 2 rad/sec has the same KE as a mass of 12 kg moving with a speed of
detailed solution
Correct option is B
K.E. of rotating body =12Iω2K.E. of a mass moving with velocity V=12mv2∴ 12mv2=12Iω2 or v=ω(I/m)or V=2312=1m/secTalk to our academic expert!
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A uniform thin rod of length l and mass m is hinged at a distance l/4 from one of the end and released from horizontal position as shown in Fig. The angular velocity of the rod as it passes the vertical position is
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